Periodic Table
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Alkali metal
Alkaline earth metal
Transition metal
Post-transition metal
Metalloid
Nonmetal
Halogen
Noble gas
Lanthanide
Actinide
57–71
89–103
1
H
1.01
2
He
4.00
3
Li
7.00
4
Be
9.01
5
B
10.81
6
C
12.01
7
N
14.01
8
O
16.00
9
F
19.00
10
Ne
20.18
11
Na
22.99
12
Mg
24.30
13
Al
26.98
14
Si
28.09
15
P
30.97
16
S
32.07
17
Cl
35.45
18
Ar
39.90
19
K
39.10
20
Ca
40.08
21
Sc
44.96
22
Ti
47.87
23
V
50.94
24
Cr
52.00
25
Mn
54.94
26
Fe
55.84
27
Co
58.93
28
Ni
58.69
29
Cu
63.55
30
Zn
65.40
31
Ga
69.72
32
Ge
72.63
33
As
74.92
34
Se
78.97
35
Br
79.90
36
Kr
83.80
37
Rb
85.47
38
Sr
87.62
39
Y
88.91
40
Zr
91.22
41
Nb
92.91
42
Mo
95.95
43
Tc
96.91
44
Ru
101.10
45
Rh
102.91
46
Pd
106.42
47
Ag
107.87
48
Cd
112.41
49
In
114.82
50
Sn
118.71
51
Sb
121.76
52
Te
127.60
53
I
126.90
54
Xe
131.29
55
Cs
132.91
56
Ba
137.33
57
La
138.91
58
Ce
140.12
59
Pr
140.91
60
Nd
144.24
61
Pm
144.91
62
Sm
150.40
63
Eu
151.96
64
Gd
157.25
65
Tb
158.93
66
Dy
162.50
67
Ho
164.93
68
Er
167.26
69
Tm
168.93
70
Yb
173.05
71
Lu
174.97
72
Hf
178.49
73
Ta
180.95
74
W
183.84
75
Re
186.21
76
Os
190.20
77
Ir
192.22
78
Pt
195.08
79
Au
196.97
80
Hg
200.59
81
Tl
204.38
82
Pb
207.00
83
Bi
208.98
84
Po
208.98
85
At
209.99
86
Rn
222.02
87
Fr
223.02
88
Ra
226.03
89
Ac
227.03
90
Th
232.04
91
Pa
231.04
92
U
238.03
93
Np
237.05
94
Pu
244.06
95
Am
243.06
96
Cm
247.07
97
Bk
247.07
98
Cf
251.08
99
Es
252.08
100
Fm
257.10
101
Md
258.10
102
No
259.10
103
Lr
266.12
104
Rf
267.12
105
Db
268.13
106
Sg
269.13
107
Bh
270.13
108
Hs
269.13
109
Mt
277.15
110
Ds
282.17
111
Rg
282.17
112
Cn
286.18
113
Nh
286.18
114
Fl
290.19
115
Mc
290.20
116
Lv
293.20
117
Ts
294.21
118
Og
295.22
Sources
PubChem Periodic Table ↗
IUPAC Periodic Table of Elements ↗
NIST Periodic Table of the Elements ↗
NIST Elemental Data Index ↗